Serial is less useful as you need a serial cable, so if you're going to carry a serial cable you might as well have one with USB on the end. If you're going in

Serial is less useful as you need a serial cable, so if you're going to carry a serial cable you might as well have one with USB on the end. If you're going into an RJ45 serial connection (like I am at the moment), then an ideal laptop would have multiple RJ45s which could be used as either 10G or serial with a standard cat5 cable (not a specially wired one).